change: new entity TaggerData and fields in Recipe - added with roo.
change: new entity TaggerData and fields added, new fields in Recipe
added with roo.
change: working on Tagging.  Not blowing up, but far from implemented.
Checking in to save work.
change: Taggers fed service in constructor.  Tests and Debugging.
change:  TextTagger completed.
change: BooleanTagger implemented and tested.
change: NumericTagger implemented and tested.  New fields in TaggerData,
RecipeTag
change: TaggingService tag method implemented, and tested for basic blow
up.
change: tag method of TaggingService implemented and full basic test.
Persist added to Tagger method signature - doesn't yet actually do
anything.
change: persist / don't persist works in TaggingService.  Started work
on 
exceptions in tagging.  Added logger - but need more help with the rest.
change: logging for errors in taggers.  Graceful exit.
change: beginning work on front end for entering TaggerData.
change: tweaks to TaggerData view.  Locked TaggerData down.
change: finished implementing methods for TagGroups, and retrieving
TagStructure.
minor: fixed bad delete tests.
change: working on tagedit page - dojo
changes: order in TagRelation, clientside movetag working, changed
signature of TaggingService.getTagStructure to return flat list of
TagDisplay objects.
change: convenience methods for creating Tags and TagRelationships.
change: filled in tests and implementation for TagService.moveTag
change: added new tag function to tag edit page, some minor bugfixes.